1) If you

Biology

1 answer:

erica [24]2 years ago

4 0

Answer:

Triassic Period (252 to 201 million years ago)

All continents during the Triassic Period were part of a single land mass called Pangaea. This meant that differences between animals or plants found in different areas were minor.

The climate was relatively hot and dry, and much of the land was covered with large deserts. Unlike today, there were no polar ice caps.

It was in this environment that the reptiles known as dinosaurs first evolved. Reptiles tend to flourish in hot climates because their skin is less porous than, for example, mammal skin, so it loses less water in the heat. Reptile kidneys are also better at conserving water.

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Given what you know about the selective pressures associated with malaria and sickle-cell anemia in the tropical areas of sub-Sa

julsineya [31]

Answer

HBA HBs

Explanation:

In some parts of Africa, up to 20% of the population are carriers of the sickle cell gene. This suggests that the trait must have a survival value. The carriers of the trait have a much lower susceptibility to malaria than normal individuals. This is because the malaria parasite survives very poorly in sickled red blood cells.

8 0

3 years ago

Please please help! I'm really behind.

kipiarov [429]

Answer:

If the oil spilled in the gulf would have been processed oil, it would be worse than a normal oil spill as these oils have a higher shelf life.

Explanation:

Oil spills happen when a large quantity of oil gets mixed with large water bodies like sea and oceans. The oil being denser than water floats on the surface and does not mix with the water. It forms a coating on top of the water.

The difference between processed oil and normal oil is that they are heated at very high temperatures and this results in oxidation which creates free radicals, which are not good for the body and its cells. Also they have a very long shelf life due to which they will remain on water for a long time.

When oil spills happen, the wind cause the spill to spread over the water surface, thereby engulfing a large amount of area. The major disadvantages of the spill are:-

The oil gets stuck in the feathers of the birds who come by to dip themselves,
Animals like whale, dolphins have blow holes for releasing water. the oil covers these holes and makes it difficult for them to breathe.
The fur of animals like seal and otter gets mixed with the oil and can prove harmful to them as it gets them exposed to cold.
The overall BOD of the water body decreases, and organisms which use sun rays coming inside the ocean suffer as these get blocked.
Since processed oil has longer shelf life, a large quantity of animals will suffer and die.

7 0

3 years ago

Please help!! PLEASE!

Genrish500 [490]

Answer:

1-Sparta, 2-Sparta, 3-Sparta, 4-both, 5-both, 6-Athens, 7-Athens, 8-Athens, 9-Sparta, 10-Athens, 11-Athens, 12- Sparta, 13-Athens, 14-Sparta, 15-Sparta

Explanation:

5 0

3 years ago

Read 2 more answers

On the average, most mammals are about: A. 90 B. 50 C. 40 D. 70, percent water

andrew11 [14]

D.) 70% mammals are 70 percent water

7 0

3 years ago

A solution of two or more metals such as brass is

Ivan

zinc and copper is a solution of brass

3 0

3 years ago